B would not be legal.

C could get you into a lot of legal issues (such as someone having a=20
reaction to whatever agent you use and dying or becoming injured or sick).

I would recommend a combination of internet, POTS, CDPD (Cellular), and=20
commercial radio frequencies (they actually have frequencies for=20
alarms). The likelihood of all being taken down at the same time drops=20
the more avenues you have. If you're close enough you could even use WIFI.

Joe M.

PICdude wrote:
> That was my concern too, and the best we've come up with so far is...
> (a) Use a POTS line, perhaps as a backup if it detects it can't =20
> communicate to the outside via internet.
> (b) Use ham radio, as there are apparently lots of repeaters =20
> everywhere that can reach me, and I don't have to pay for a POTS line. =20
>   But I know nothing about this, so need to research.
> (c) [KIDDING]Spray the whole place down with tear gas or some type of =20
> sleeping gas until I can get there to see if anything is really going =20
> on.[/KIDDING]
>=20
>=20
> Quoting David VanHorn <microbrix@gmail.com>:
>=20
>> What happens when your internet connectivity is taken down?
>> --
>> http://www.piclist.com PIC/SX FAQ & list archive
>> View/change your membership options at
>> http://mailman.mit.edu/mailman/listinfo/piclist
>>
>=20
>=20
>=20
--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.